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M. LAMBERT. APPARATUS FOR THE MANUFACTURE OF DXIDE 0F ZINC. No. 283,901.

Patented Aug. 28, 1883.

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I M LAMBERT APPARATUS FOR THE MANUFACTURE OF OXIDE 0F ZINC. No. 283,901. Patented 'Aug. 28, 1883.

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maria wzinessea UNITED STATES PATENT MARK LAMEERT, OF NE\VAR-K, NEV JERSEY.

APPARATUS FOR THE MANUFACTURE OF OXIDE OF zinc.

SPECIFICATION forming part of Letters Patent No. 28?,901, dated August 28, 1853.

Application filed June 29, 1883. (N0 model.)

To all whom it may concern:

Be it known that I, hIARK LAMBERT, a citizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvements in Apparatus for the Manufacture of Oxide of Zinc; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to apparatus used in the manufacture of oxide of zinc, or zincwhite, and is intended to facilitate the pro duction of said oxide, to improve the quality of the same, to lighten the work, and reduce the number of men employed in its 1nanufacture.

The invention consists of such construction and combination of parts as will be hereinafter set forth an d finally embodied in the claims.

In the drawings, comprised in two sheets, Figure 1, Sheet 1, is a side elevation of a block of furnaces and the pipes extending over them, together with an end elevation of a tower. Fig. 2, Sheet 2, is a vertical longitudinal section of thetowcr, taken through one of thedivisions of the same on the line 00 of Fig. 1, with a side elevation of a fan. Fig. 3 is a side elevation of a detached portion of the pipes used in the bag-room with a bag secured thereto.

A in the drawings is a block of furnaces used in converting the ore into .oxide.

B is a series of pipes extending horizontally over the furnaces.

G O are pipes connecting the furnaces with the pipes B B.

D is a tower divided longitudinally and transversely into several passages, as dotted on. Fig. 1.

E E are pipes connecting the tower with the pipes B.

F is one of a series of fans employed to supply the requisite draft.

F is the frame supporting said fans.

G is a pipe connecting one of the divisions in the tower with one of the fans.

His a pipe connecting the fans with the pipes in the bag-room.

H, Fig. 3, is an enlarged view of the pipe in the bag-room, with a bag, M, secured to one of the lengths.

The furnaces are arranged in blocks, four on a side, the rear of each meeting, thus making eight furnaces in a block. The opposite furnaces on each side connect with the same pipee. 9., No. 1-and its opposite one connecting by pipe 0 with the topmost pipe of the series, No. 2 on each side connecting with the second pipe from the top, &c.

Heretofore but one pipe has been used to conduct the vaporous products of the furnaces to the tower, all of the furnaces in each block being connected with this pipe. This involves the firing of two or more of the furnaces in each block at the same time and the employment of one man for each two furnaces, or four men to a block. In firing one furnace after another and allowing the vapors to enter the same pipe, the coal gases, dust, 810., arising from those fired latest are liable to injure the quality of the oxide from those furnaces fired previously.

By my system of piping the products of those furnaces fired at different times are kept separate, and an improved and uniform quality of the oxide is maintained throughout the process. Moreover, but one man is required to attend the furnaces on each side of the block, instead of two men to a side, as they may be fired one after another without injury to the product.

Another advantage attained by employing several pipes is that by dividing the body of heated air and gas it becomes cooled much sooner than when one large pipe is used, thereby preventing the heated gas fromburning the bags in the bag-room.

The direction of the circulation from the furnaces to the bag-room is as follows: The vapor passes from the furnaces through the pipes G, B, and E into the tower at the top, as indicated in Figs. 1 and 2, where, passing over the tile k, which covers three of the transverse passages and all of the longitudinal passages, as indicated by dotted lines on Fig. 1, it follows the course, as indicated by the arrows on Fig. 2, and is drawn through the pipe Ginto the fan through the openings in the side of the casing J, whence it passes through the pipe H a into the bags in the bag-room,the pipe H be ing connected with the pipes H in said bagroom. The entrances and exits of the piping may be made at any suitable point in the tower, which may be divided into a greater or less number of passages than is shown in the drawings, in order to increase or diminish the distance required to be traveled, so as to cool the vapor. Doors D may be provided in the tower, so that access may be had within it,

if desirable.

The pipes now in use in the bag-room, being of sheet-iron, become rusted when not in use, and consequently have to be replaced at great trouble and expense, as the'rust would destroy the value of the oxide. In order to obviate this difficulty I employ earthen pipes, as shown in Fig. 3, provided with depending branchlets Z, to which the bags m may be secured, as shown.

Dampers 0, Fig. 1, are provided so as to close the opening of the pipes O and prevent the smoke and dust from entering said pipes when the furnaces are first fired, the smoke and dust passing into the open air, an open joint being provided for that purpose, as shown inFig. 1. The dampers may be opened and closed by cords within reach of the workman. Each of the longitudinal passages in the tower may have a fan connected therewith by the openings G, as shown in Fig. 1, so as to secure an independent draft. The

' fans are driven by the usual mechanism attached to the shaft 0, passing through said fans.

Having thus described my invention, what I claim is- 1. In an apparatus for the manufacture of oxide of zinc, the combination, with the fur naces thereof arranged in blocks, of a series of pipes, B,- extending horizontallyiabove said furnaces and connected with the same by pipes, (as 0,) said pipes being connected with a tower, D, all substantially as and for the purposes set forth.

2. In an apparatus for the manufacture of oxide of zinc, the combination, with the furnaces thereof and a series of pipes, B, arranged horizontally above said furnaces and connected with the same by pipes O, of a tower, D, divided into two or more divisions longitudinally and transversely, each pipe of the series B connecting witha separate division in'said tower, all substantially as set forth.

3. In combination, the furnaces A, pipes B, arranged horizontally above said furnaces and connected with the same by pipes O, a tower, D, a fan, F, having connected therewith an earthen pipe or pipes, said pipes being provided with depending branchlets Z, having at tached thereto bags m, all substantially as and for the purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 22d day of Witnesses:

F. F. CAMPBELL, CHARLES H. PELL. 

